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Tirzepatide Side Effects

The most commonly reported side effects of tirzepatide include incorrect dose administered, injection site pain, and nausea, based on 120,971 FDA adverse event reports from 2019 to 2025. 3.2% of reports found the drug to be ineffective.

Tirzepatide side effects

Percentages show how often each reaction appears relative to total reports for tirzepatide.

1
Incorrect Dose Administered21.4%25,920
2
Injection Site Pain10.2%12,327
3
Nausea9.9%12,036
4
Extra Dose Administered6.6%8,028
5
Off Label Use6.4%7,727
6
Diarrhoea5.6%6,726
7
Vomiting4.7%5,688
8
Injection Site Haemorrhage3.9%4,746
9
Accidental Underdose3.7%4,444
10
Injection Site Erythema3.6%4,295
11
Constipation3.5%4,191
12
Drug Ineffective3.2%3,852
13
Product Dose Omission Issue3.2%3,819
14
Fatigue2.6%3,183
15
Injection Site Bruising2.5%3,002

These are voluntary reports and do not establish that tirzepatide caused these reactions.

Report severity

16.7%Serious20,237 reports
6.0%Hospitalizations7,288 reports
0.5%Fatal652 reports

Seriousness is determined by the reporter, not by OpenClaim.

Tirzepatide drug interactions

Other drugs that appear in adverse event reports alongside tirzepatide. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Semaglutide0.8%987
2
Dupilumab0.8%956
3
Insulin0.6%734
4
Dulaglutide0.5%583
5
Empagliflozin0.3%395
6
Metformin0.2%282
7
Treprostinil0.2%269
8
Sodium-oxybate0.2%213
9
Evolocumab0.1%160
10
Relugolix0.1%136
11
Calcium-oxybate0.1%125
12
Magnesium-oxybate0.1%125
13
Potassium-oxybate0.1%125
14
Mifepristone<0.1%99
15
Risankizumab-rzaa<0.1%95

Taken alongside

1
Metformin3.4%4,148
2
Insulin1.8%2,148
3
Atorvastatin-calcium1.6%1,899
4
Levothyroxine-sodium1.3%1,575
5
Ergocalciferol1.3%1,519
6
Omeprazole1.1%1,329
7
Empagliflozin1.1%1,281
8
Aspirin0.9%1,148
9
Rosuvastatin0.9%1,129
10
Losartan-potassium0.9%1,043
11
Lisinopril0.8%964
12
Albuterol0.8%958
13
Gabapentin0.8%957
14
Amlodipine0.8%956
15
Acetaminophen0.7%887

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports tirzepatide side effects

61.6% of tirzepatide adverse event reports involve female patients and 20.0% involve male patients. The largest age group is adult at 77%. These figures reflect who reports side effects, not underlying risk.

Sex

Female61.6%
Male20.0%
Unknown18.4%

Age group

< 2<0.1%
2–11<0.1%
12–17<0.1%
18–6476.7%
65+23.2%

What is tirzepatide used for

Conditions and purposes for which patients were taking tirzepatide when the adverse event was reported.

Abdominal DiscomfortAbdominal DistensionAbdominal Pain UpperAccidental Exposure To ProductAcneAdenomyosisAdverse Drug ReactionAffective DisorderAlcohol AbuseAlcoholismAlopeciaAlopecia UniversalisAnaemiaAnalgesic TherapyAngiopathy

Showing 15 of 396 indications

Tirzepatide brand names and reporting trend

Tirzepatide is sold under the brand name Zepbound (autoinjector).

Brand names

Zepbound (autoinjector)2,981

Quarterly reports (20192025)

201920242025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking tirzepatide with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.